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Zepler [3.9K]
4 years ago
11

I have no idea how to do this im trying to learn on 3 hours of sleep rn ^-^;

Mathematics
1 answer:
QveST [7]4 years ago
7 0

Answer:

x=7,y=16

Step-by-step explanation:

The tick marks you see on the sides denote congruence. If they have the same number of tick marks, then their side length are congruent.

And, recall that congruent side lengths have the same measure.

So, look at the sides with 2 tick marks. They are congruent. Therefore:

2x+5=x+12

Subtract x from both sides:

x+5=12

Subtract 5 from both sides:

x=7

So, x is 7.

Now, look at the sides with only 1 tick mark. Again, they are congruent. Thus:

y-4=x+5

We already know x is 7. So:

y-4=(7)+5

Add:

y-4=12

Add 4 to both sides:

y=16

So, y is 16.

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Step-by-step explanation:

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3 years ago
If a polygon is a quadrilateral, then it is a square.
Crank

Answer:

1) Hypothesis: A polygon is a quadrilateral,

2) Conclusion:  It is a square.

3) Counter example, A polygon is a square quadrilateral if  all the sides are equal.

4)  Inverse : If a polygon is not  a quadrilateral, then it is not  a square.

5)  Converse :If a square is quadrilateral then it is a polygon.

6) Biconditional statement :If a square is a  polygon quadrilateral , then the polygon has equal sides.

Step-by-step explanation:

The hypothesis of the conditional statement is the one which starts immediately after the word if and the conclusion is the one given after then.

1) Hypothesis: A polygon is a quadrilateral,

2) Conclusion:  It is a square.

3) It is false because the square is a quadrilateral which has four side equal . The given statement does not contain anything defining the quadrilateral as a square.

Counter example, A polygon is a square quadrilateral if  all the sides are equal.

4) The inverse is obtained by  finding the inverse of both the hypothesis and conclusion.

If a polygon is not  a quadrilateral, then it is not  a square.

5) The converse is obtained by changing the hypothesis into conclusion and vice versa.

If a square is quadrilateral then it is a polygon.

6) A bi conditional statement is one  in which both the hypothesis and the conclusion can be treated as the hypothesis or the conclusion and vice versa. Meaning it can be operated both ways

Conclusion as hypothesis

Hypothesis as conclusion

If a square is a  polygon quadrilateral , then the polygon has equal sides.

Hypothesis : A square is a  polygon quadrilateral.

Conclusion : The polygon has equal sides.

Hypothesis: The  quadrilateral  polygon has equal sides.

Conclusion : The  quadrilateral polygon is a square.

3 0
4 years ago
-8 + 1/3y = 2 linear equations edmentum
tiny-mole [99]

Answer:

y= 30

Step-by-step explanation:

-8 + 1/3y = 2

add 8 to each side

1/3y=10

multiply both sides by 3

y=30

4 0
4 years ago
Read 2 more answers
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